OS/Shell Scripting Troubleshooting Workflow Bundle

# System information
uname -a
cat /etc/os-release
hostnamectl

# Resource usage
top
htop
df -h
free -m

# Process information
ps aux
pgrep -f pattern
lsof -i :port

# Network status
netstat -tulpn
ss -tulpn
ip addr show

Use @bash-linux to diagnose system performance issues

# Install ShellCheck
sudo apt install shellcheck  # Debian/Ubuntu
brew install shellcheck      # macOS

# Run ShellCheck
shellcheck script.sh
shellcheck -f gcc script.sh

# Fix common issues
# - Use quotes around variables
# - Check exit codes
# - Handle errors properly

Use @shellcheck-configuration to lint and fix shell scripts

# Enable debug mode
set -x  # Print commands
set -e  # Exit on error
set -u  # Exit on undefined variable
set -o pipefail  # Pipeline failure detection

# Add logging
log() {
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" >> /var/log/script.log
}

# Trap errors
trap 'echo "Error on line $LINENO"' ERR

# Test sections
bash -n script.sh  # Syntax check
bash -x script.sh  # Trace execution

Use @systematic-debugging to trace and fix shell script errors

#!/usr/bin/env bash
set -euo pipefail

# Constants
readonly SCRIPT_NAME=$(basename "$0")
readonly SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)

# Logging
log() {
    local level="$1"
    shift
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] [$level] $*" >&2
}

info() { log "INFO" "$@"; }
warn() { log "WARN" "$@"; }
error() { log "ERROR" "$@"; exit 1; }

# Usage
usage() {
    cat <<EOF
Usage: $SCRIPT_NAME [OPTIONS]

Options:
    -h, --help      Show this help message
    -v, --verbose   Enable verbose output
    -d, --debug     Enable debug mode

Examples:
    $SCRIPT_NAME --verbose
    $SCRIPT_NAME -d
EOF
}

# Main function
main() {
    local verbose=false
    local debug=false

    while [[ $# -gt 0 ]]; do
        case "$1" in
            -h|--help)
                usage
                exit 0
                ;;
            -v|--verbose)
                verbose=true
                shift
                ;;
            -d|--debug)
                debug=true
                set -x
                shift
                ;;
            *)
                error "Unknown option: $1"
                ;;
        esac
    done

    info "Script started"
    # Your code here
    info "Script completed"
}

main "$@"

Use @bash-pro to create a production-ready backup script

Use @linux-shell-scripting to automate system maintenance tasks

#!/usr/bin/env bats

@test "script returns success" {
    run ./script.sh
    [ "$status" -eq 0 ]
}

@test "script handles missing arguments" {
    run ./script.sh
    [ "$status" -ne 0 ]
    [ "$output" == *"Usage:"* ]
}

@test "script creates expected output" {
    run ./script.sh --output test.txt
    [ -f "test.txt" ]
}

Use @bats-testing-patterns to write tests for shell scripts

# Check logs
journalctl -xe
tail -f /var/log/syslog
dmesg | tail

# Network troubleshooting
ping host
traceroute host
curl -v http://host
dig domain
nslookup domain

# Process troubleshooting
strace -p PID
lsof -p PID
iotop

# Disk troubleshooting
du -sh /*
find / -type f -size +100M
lsof | grep deleted

Use @devops-troubleshooter to diagnose server connectivity issues

Use @incident-responder to investigate system outage

# Edit crontab
crontab -e

# Backup every day at 2 AM
0 2 * * * /path/to/backup.sh

# Clean logs weekly
0 3 * * 0 /path/to/cleanup.sh

# Monitor disk space hourly
0 * * * * /path/to/monitor.sh

# /etc/systemd/system/backup.timer
[Unit]
Description=Daily backup timer

[Timer]
OnCalendar=daily
Persistent=true

[Install]
WantedBy=timers.target

Use @workflow-automation to create automated system maintenance workflow

top -bn1 | head -20
ps aux --sort=-%cpu | head -10
pidstat 1 5

free -h
vmstat 1 10
cat /proc/meminfo

df -h
du -sh /* 2>/dev/null | sort -h
find / -type f -size +500M 2>/dev/null

ip addr show
ip route show
ss -tulpn
curl -v http://target

systemctl status service-name
journalctl -u service-name -f
systemctl restart service-name